Damper pulley



FIG. 1 is a front perspective view of a damper pulley showing my new design;

FIG. 2 is a side elevational view thereof as viewed from the right side;

FIG. 3 is a side elevational view thereof as viewed from the left side;

FIG. 4 is an enlarged front elevational view thereof; and

FIG. 5 is an enlarged rear elevational view thereof. 

The ornamental design for a damper pulley, as shown and described. 